Abstracts tagged "T Cell"

Abstract Number: 1012 • ACR Convergence 2021
Altered T Cell Responses, and Synergistic Regulation of Synovial Fibroblasts Function in Children with Down’s Syndrome-Associated Arthritis
Serena Foo¹, Achilleas Floudas², Aisling O' Brien¹, Sharon Ansboro¹, Ronan Mullan³, Douglas Veale⁴, Emma MacDermott⁵, Derek Deely⁶, Charlene Foley⁶, Orla Killeen⁶ and Ursula Fearon¹, ¹Trinity College Dublin, Dublin, Ireland, ²Molecular Rheumatology Trinity Biomedical Sciences Institute, Dublin, Ireland, ³Tallaght University Hospital, Dublin, Ireland, ⁴University College Dublin, Dublin, Ireland, ⁵Children’s Health Ireland (CHI) at Crumlin, Dublin, Ireland, ⁶Children's Health Ireland, Crumlin, Dublin, Ireland
Background/Purpose: Juvenile idiopathic arthritis (JIA) was thought to be the most common inflammatory arthritis in children. However an aggressive, erosive arthritis of little-known immunologic mechanism…
Abstract Number: 1438 • ACR Convergence 2021
Development of a Computationally Designed, Hyperstable Dual Inhibitor of the IL-2 and IL-15 Receptors: A Novel Therapeutic Candidate for Inflammatory Conditions
Renan Vergara¹, Alex Chen¹, Jerry Chen¹, Marianne Riley¹, Luis Blancas-Mejia¹, Christie Mortales¹, Tania Berrocal¹, Tanu Priya¹, Marsha Mason¹, Kevin Yu¹, Olga Sharapova¹, Jorgen Nelson¹, Alfredo Quijano-Rubio¹, Thomas Linsky¹, Ryan Swanson¹ and Daniel-Adriano Silva², ¹Neoleukin Therapeutics, Inc., Seattle, WA, ²Formerly of Neoleukin Therapeutics, Inc., Seattle, WA
Background/Purpose: T cell mediated pathology is central to many forms of autoimmunity, and cytokines perform critical inflammatory functions during this process. IL-2 and IL-15 are…
Abstract Number: 1499 • ACR Convergence 2021
Imbalance Between T Follicular Cells and T Regulatory Cells Involved in High Fat-Diet Associated Lupus Development in MRL/lpr Mice
Ronak Patel¹, Therese Posas-Mendoza², Juan Meng³, Xuhua Shi³, Swathi Dhulipala⁴, Chad Hille², Linh Hellmers¹, Robert Quinet⁵, William Davis⁶, Jerald Zakem⁷, Chandana Keshavamurthy¹, Zongbing You³ and Xin Zhang¹, ¹Ochsner, New Orleans, LA, ²Ochsner Clinic Foundation, New Orleans, LA, ³Tulane University, New Orleans, LA, ⁴Ochsner Clinic Foundation, River Ridge, LA, ⁵Ochsner Health, River Ridge, LA, ⁶Ochsner Medical Center, New Orleans, LA, ⁷Ochsner Health Systems, Metairie, LA
Background/Purpose: Systemic Lupus Erythematosus (SLE) is a chronic autoimmune disease characterized by persistent inflammation and production of autoantibodies, which deposit within numerous tissues leading to…
Abstract Number: 1507 • ACR Convergence 2021
Role of CD4+ T Cells in the Pathogenesis of RA: Immunization with Citrullinated T Cell Epitopes Is Sufficient to Induce Immunological and Clinical Manifestations of Arthritis in DR4-Transgenic Mice
Elena Tonti¹, Bhargavi Duvvuri², Sudeshna Dhar¹, Derek Haaland³, Maggie Larche¹ and Mark Larché¹, ¹McMaster University, Hamilton, ON, Canada, ²University of Washington, Seattle, WA, ³McMaster University, Hamilton, Ontario and The Waterside Clinic, Oro Medonte, ON, Canada
Background/Purpose: Although the etiology of rheumatoid arthritis (RA) remains unclear, existing research suggests a complex interplay of both genetic and environmental factors. Citrullinated proteins/peptides, and…
Abstract Number: 0426 • ACR Convergence 2020
T-Cell Receptor (TCR) Sequencing Reveals Decreased Diversity and Clonotypic Expansion of T-cells in Relapsing Polychondritis (RP)
Emily Rominger¹, Sufia Bakshi², Emily Rose³, Marcela Ferrada³, Peter C. Grayson⁴, Robert Colbert⁵ and Keith Sikora⁶, ¹Systemic Autoimmunity Branch, Vasculitis Translational Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, ²National Institutes of Health, Bethesda, MD, ³Systemic Autoimmunity Branch, Vasculitis Translational Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, ⁴Systemic Autoimmunity Branch, National Institutes of Health, NIAMS, Bethesda, MD, ⁵Pediatric Clinical Trials Unit and Office of Clinical Director, NIAMS, NIH, Bethesda, MD, ⁶National Institutes of Health Clinical Center, Bethesda, MD
Background/Purpose: Relapsing polychondritis (RP) is a rare, systemic inflammatory disease characterized by recurrent inflammation of cartilaginous structures, including the nose/ears, joints, and trachea. The etiology of…
Abstract Number: 0947 • ACR Convergence 2020
STING Gain-of-Function in Radio-resistant Cells Supports a Lymphocyte Dependent Auto-inflammatory Lung Disease
Kevin Gao¹, Mona Motwani¹, Ann Marshak-Rothstein² and Katherine Fitzgerald¹, ¹University of Massachusetts medical school, worcester, MA, ²University of Massachusetts medical school, Newton, MA
Background/Purpose: cGAS-STING is a cytosolic dsDNA sensing pathway whose regulation is vital to immune homeostasis. Pediatric patients with constitutively active STING mutations develop an autoinflammatory…
Abstract Number: 1440 • ACR Convergence 2020
The Myeloperoxidase (MPO) Anti-Neutrophilic Cytoplasmic Antibody (ANCA) Binding Epitope, MPO447-459 Induces CD4 T-cell Proliferation in Patients with MPO-ANCA-associated Vasculitis
Matthew Terrill¹, Hendrik Nel², Yassmin Musthaffa³, Wong Richard⁴, Ross Francis⁵, David Johnson⁵, Greg Keir⁶, David Gillis⁷ and Ranjeny Thomas⁸, ¹University of Queensland Diamantina Institute and Princess Alexandra Hospital, Rheumatology Department, Brisbane- Australia, Moffat beach, Queensland, Australia, ²University of Queensland Diamantina Institute, Brisbane, Queensland, Australia, ³University of Queensland Diamantina Institute, Brisbane, Australia, ⁴Immunology Department, Princess Alexandra Hospital, Brisbane- Australia, Brisbane, Australia, ⁵Renal Department, Princess Alexandra Hospital, Brisbane- Australia., Brisbane, Queensland, Australia, ⁶Respiratory Department, Princess Alexandra Hospital, Brisbane- Australia., Brisbane, Queensland, Australia, ⁷Immunopathology Department, Royal Women’s and Children’s Hospital, Brisbane- Australia., Brisbane, Queensland, Australia, ⁸University of Queensland Diamantina Institute and Rheumatology Department, Princess Alexandra Hospital, Brisbane – Australia., Brisbane, Australia
Background/Purpose: In Myeloperoxidase (MPO) Anti Neutrophilic Cytoplasmic Antibody (ANCA)-Associated Vasculitis (MPO-AAV), murine and human studies suggest that the MPO435-465 region, which includes ANCA-binding MPO447-459, the…
Abstract Number: 2047 • ACR Convergence 2020
Synovial CD8 T Cells in Rheumatoid Arthritis Exhibit High Antigen-independent Cytokine Production and Low Cytotoxic Potential
Anna Helena Jonsson¹, Fan Zhang², Emma Gomez-Rivas³, Karishma Rupani⁴, Gerald Watts⁵, Kevin Wei¹, Runci Wang⁴, Deepak Rao⁴, Accelerating Medicines Partnership (AMP) - RA/SLE⁶, Soumya Raychaudhuri² and Michael Brenner¹, ¹Brigham and Women's Hospital and Harvard Medical School, Boston, MA, ²Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, ³Division of Rheumatology, Brigham and Women's Hospital, Boston, MA, ⁴Brigham and Women's Hospital, Boston, MA, ⁵Brigam and Women's Hospital, Boston, ⁶., Boston
Background/Purpose: T cell-derived pro-inflammatory cytokines are major drivers of RA pathogenesis, and these cytokines have traditionally been attributed to CD4 T cells. However, single-cell RNA-sequencing…
Abstract Number: 0449 • ACR Convergence 2020
Cytotoxic T Cells with a Chronic Antigen Exposure Phenotype Drive Immune Checkpoint Inhibitor Sicca
Blake Warner¹, Billel Gasmi², David Kleiner³, Paola Perez Riveros⁴, Daniel Barber⁵, Shunsuke Sakai⁵ and Alan Baer⁶, ¹National Institute of Dental and Craniofacial Research, Bethesda, ²National Cancer Institute, Bethesda, MD, ³National Cancer Institute, Bethesda, ⁴National Institute of Dental and Craniofacial Research, Bethesda, MD, ⁵National Institute of Allergy and Infectious Disease, Bethesda, MD, ⁶Johns Hopkins University School of Medicine, Baltimore, MD
Background/Purpose: Immune checkpoint inhibitors (ICI) have advanced the field of cancer therapeutics. By blocking the negative co-stimulation of T cells, ICI augment the anti-tumor immune…
Abstract Number: 0948 • ACR Convergence 2020
Mass Cytometry Reveals Activation Heterogeneity of Circulating Neutrophils in Systemic Lupus Erythematosus
Ricardo Grieshaber-Bouyer¹, Joshua Keegan², Peter Nigrovic³, James Lederer⁴ and Deepak Rao², ¹Department of Medicine V, Hematology, Oncology and Rheumatology, Heidelberg University Hospital, Heidelberg, Germany; Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA, Heidelberg, Germany, ²Brigham and Women's Hospital, Boston, MA, ³Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA, Boston, ⁴BWH Harvard Medical School, Boston, MA
Background/Purpose: Neutrophils are important effector cells in systemic immune-mediated diseases. Neutrophil phenotypes vary depending on their age, maturity, activation state, and local environment; however, differences…
Abstract Number: 1443 • ACR Convergence 2020
High-dimensional Analyses of Checkpoint-inhibitor Related Arthritis Synovial Fluid Cells Reveal a Unique, Proliferating CD38hi Cytotoxic CD8 T Cell Population Induced by Type I IFN
Runci Wang¹, Karmela Kim Chan², Amy Cunningham-Bussel¹, Gregory Vitone³, Aidan Tirpack², Caroline Benson², Gregory Keras⁴, Anna Helena Jonsson⁵, Michael Brenner⁵, Laura Donlin⁶, Anne Bass⁷ and Deepak Rao¹, ¹Brigham and Women's Hospital, Boston, MA, ²Hospital For Special Surgery, New York, NY, ³Hospital for Special Surgery, New York, ⁴Brigham and Women’s Hospital, Division of Rheumatology, Inflammation, and Immunity, Boston, MA, ⁵Brigham and Women's Hospital and Harvard Medical School, Boston, MA, ⁶Hospital for Special Surgery, Weill Cornell Medicine, New York, ⁷Hospital for Special Surgery/Weill Cornell Medicine, New York, NY
Background/Purpose: Checkpoint inhibitors (CI) used to treat cancer frequently trigger immune-related adverse events, including inflammatory arthritis. CI-related arthritis (CIrA) occurs in ~5% of treated patients,…
Abstract Number: 0470 • ACR Convergence 2020
Th1 Polarization Defines the T Cell Compartment in the Joints of Oligoarticular Juvenile Idiopathic Arthritis Patients
Amelie Jule¹, Kacie Hoyt¹, Kevin Wei², Siobhan Case³, Margaret Chang¹, Ezra Cohen¹, Fatma Dedeoglu¹, Melissa Hazen¹, Jonathan Hausmann⁴, Olha Halyabar⁵, Erin Janssen⁵, Pui Lee⁶, Jeffrey Lo¹, Mindy Lo¹, Esra Meidan⁷, Jordan Roberts¹, Mary Beth Son¹, Robert Sundel⁵, Talal Chatila¹, Peter Nigrovic⁸ and Lauren Henderson⁹, ¹Boston Children's Hospital, Boston, MA, ²Brigham and Women's Hospital and Harvard Medical School, Boston, MA, ³Brigham and Women's Hospital, Boston, MA, ⁴Boston Children's Hospital / Beth Israel Deaconess Medical Center, Cambridge, MA, ⁵Children's Hospital/Boston Medical Center, Boston, MA, ⁶1.Boston Children's Hospital;2.Brigham and Women's Hospital;3.Harvard Medical School, Newton, MA, ⁷Boston Children's Hospital, Somerville, MA, ⁸Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Division of Immunology, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA, Boston, ⁹Boston Children's Hospital, Watertown, MA
Background/Purpose: Oligoarticular juvenile idiopathic arthritis (oligo JIA) is defined by limited joint involvement at disease onset. Some children achieve long-term remission while others continue to…
Abstract Number: 0972 • ACR Convergence 2020
Mapping Oligoclonally Expanded T Cells Within the Peripheral and Synovial Immune Landscape of Untreated ACPA+ Rheumatoid Arthritis Patients at the Single Cell Level
Pascale Wehr¹, Hendrik Nel¹, Chenhao Zhou², Ahmed Mehdi², Angelika Christ³, Helen Weedon⁴, Mihir Wechalekar⁵ and Ranjeny Thomas⁶, ¹University of Queensland Diamantina Institute, Brisbane, Queensland, Australia, ²University of Queensland Diamantina Institute, Brisbane, Australia, ³University of Queensland Institute for Molecular Bioscience, Brisbane, Australia, ⁴Flinders Medical Centre, Adelaide, Australia, ⁵Flinders Medical Centre, Adelaide, South Australia, Australia, ⁶University of Queensland Diamantina Institute and Rheumatology Department, Princess Alexandra Hospital, Brisbane – Australia., Brisbane, Australia
Background/Purpose: Clonal T cell expansions – some large – have been identified in the peripheral blood (PB) and in synovial tissue (ST) of multiple joints…
Abstract Number: 1480 • ACR Convergence 2020
Abatacept for the Treatment of IgG4-Related Disease
Mark Matza¹, Cory Perugino¹, Liam Harvey², Zachary Wallace³, Hang Liu⁴, Shiv Pillai⁵ and John H. Stone⁶, ¹Massachusetts General Hospital, Boston, MA, ²Massachusetts General Hospital, Boston, ³Massachusetts General Hospital, Newton, MA, ⁴Massachusetts General Hospital, Cambridge, MA, ⁵Harvard Medical School, Cambridge, MA, ⁶Massachusetts General Hospital Rheumatology Unit, Harvard Medical School, Boston, MA
Background/Purpose: To assess the efficacy and safety of abatacept (ABA) for the treatment of IgG4-related disease (IgG4-RD). To date, there are no FDA-approved treatments available…
Abstract Number: 0472 • ACR Convergence 2020
ApoB:ApoA1 Ratio Could Predict Atherosclerotic Risk in Juvenile-SLE Patients Associated with Altered Interferon Signalling in CD8+ T-cells
George Robinson¹, Kirsty Waddington², Leda Coelewij², Junjie Peng², Meena Naja², Chris Wincup², Anna Radziszewska², Hannah Peckham², David Isenberg², Yiannis Ioannou², Ines Pineda Torra², Coziana Ciurtin² and Elizabeth Jury², ¹University College London, Hertford, United Kingdom, ²University College London, London, United Kingdom
Background/Purpose: Systemic lupus erythematosus (SLE) is an autoimmune rheumatic disease characterised by immune-dysregulation, chronic inflammation, type-I interferon (IFN) signatures and increased cardiovascular disease (CVD) risk…

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